地震作用下开口Kiewitt型弦支穹顶结构的动力稳定
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摘要
根据弦支穹顶结构的受力特点,建立梁元、杆元和索元的混合有限元动力分析模型.提出利用动态增量法,根据B-R判别准则,提取各级地震加速度幅值下的节点最大位移作为动力响应特征参数,探讨大跨度、小矢跨比开口Kiewitt型弦支穹顶结构在地震作用下的动力稳定极限承载力的研究方法.通过改变结构参数、几何参数等诸多因素来研究其对地震作用下结构动力稳定临界值的影响.分析表明,初始缺陷会明显降低弦支穹顶结构的动力稳定临界值,矢跨比、预应力值和杆件截面对于结构的动力稳定性不呈单调变化.
Based on the load-bearing characteristics,the combined finite element model of beam elements,truss elements and cable elements was set up.A method taking the maximum displacement on nodes under earthquake acceleration of each level as dynamic response representative parameter is proposed to study the dynamic ultimate capacity for the Kiewitt suspen dome with long span and small ratio of rise to span by application of the incremental dynamic analysis combined with B-R kinetic criterion.Furthermore,the influences of factors on dynamic stability for the structure. Such as structural parameters,geometric parameters and different earthquake input were investigated.Finally some conclusions were obtained that the initional imperfection will decrease the critical value of structural dynamic structural dynamic stability and the rise-span ratio,the lengths of bars and cross section areas are not monotonous to the structural dynamic stability.
Based on the load-bearing characteristics,the combined finite element model of beam elements,truss elements and cable elements was set up.A method taking the maximum displacement on nodes under earthquake acceleration of each level as dynamic response representative parameter is proposed to study the dynamic ultimate capacity for the Kiewitt suspen dome with long span and small ratio of rise to span by application of the incremental dynamic analysis combined with B-R kinetic criterion.Furthermore,the influences of factors on dynamic stability for the structure. Such as structural parameters,geometric parameters and different earthquake input were investigated.Finally some conclusions were obtained that the initional imperfection will decrease the critical value of structural dynamic structural dynamic stability and the rise-span ratio,the lengths of bars and cross section areas are not monotonous to the structural dynamic stability.
引文
[1]KAWAGUCHI M.Design,tests and realization of sus-pen dome system[J].Journal of the International Asso-ciation for Shell and Spatial Structures,1999,40(3):179-192.
[2]李永梅,张毅刚.新型索承网壳结构静力、稳定性分析[J].空间结构,2003,9(1):25-30.LI Yong-mei,ZHANG Yi-gang.Stability and staticanalysis of cable-supported lattice shells[J].SpatialStructures,2003,9(1):25-30.
[3]刘慧娟,韩庆华,周全智.弦支穹顶结构在地震作用下的动力稳定性研究[J].天津理工大学学报,2007,23(2):84-88.LIU Hui-juan,HAN Qing-hua,ZHOU Quan-zhi.A-nalysis on the dynamic stability of suspen-dome[J].Journal of Tianjin University of Technology,2007,23(2):84-88.
[4]王秀丽,孙晓骥,赵玉慧.地震作用下弦支穹顶结构动力稳定性参数分析[J].空间结构,2008,14(3):22-27.WANG Xiu-li,SUN Xiao-ji,ZHAO Yu-hui.Parametricstudy of dynamic stability of suspen domes under earth-quake[J].Spatial Structures,2008,14(3):22-27.
[5]罗永峰,刘慧娟,韩庆华.弦支穹顶结构动力稳定性分析方法[J].西南交通大学学报,2008,43(6):729-735.LUO Yong-feng,LIU Hui-juan,HAN Qing-hua.Anal-ysis method of dynamic stability of suspended domestructures[J].Journal of Southwest Jiaotong Universi-ty,2008,43(6),729-735.
[6]VAMVATSIKOS D,CORNELL C A.Incremental dy-namic analysis[J].Earthquake Engineering and Struc-tural Dynamics,2002,31:491-514.
[7]CHEN W F,HAN D J.Plasticity for Structural Engi-neers[M].New York:Springer-Verlag,1988.
[8]BUDIANSKY B,HUTCHINSON J W.Dynamic buck-ling of imperfection sensitive structures[A].Proceed-ings of International Congress of Applied Mechanics[C],Munich,1964:120-128.
[9]李永梅.新型索承网壳结构体系理论和试验研究[D].北京:北京交通大学,2004.LI Yong-mei.Theoretical Analysis and ExperimentStudy of Cable-Supported Lattice Shell Structures[D].Beijing:Beijing Jiaotong University,2004.
[10]JGJ61-2003.网壳结构技术规程[S].北京:中国建筑工业出版社,2003.
[11]支旭东,聂桂波,范峰,等.大跨度单层球面网壳的损伤模型及强震失效[J].哈尔滨工业大学学报,2009,41(8):6-10.ZHI Xu-domg,NIE Gui-bo,FAN Feng,et al.Dam-age model and failure mechanism of long-span single-layer reticulated domes under earthquakes[J].Journalof Harbin Institute of Technology,2009,41(8):6-10.
[2]李永梅,张毅刚.新型索承网壳结构静力、稳定性分析[J].空间结构,2003,9(1):25-30.LI Yong-mei,ZHANG Yi-gang.Stability and staticanalysis of cable-supported lattice shells[J].SpatialStructures,2003,9(1):25-30.
[3]刘慧娟,韩庆华,周全智.弦支穹顶结构在地震作用下的动力稳定性研究[J].天津理工大学学报,2007,23(2):84-88.LIU Hui-juan,HAN Qing-hua,ZHOU Quan-zhi.A-nalysis on the dynamic stability of suspen-dome[J].Journal of Tianjin University of Technology,2007,23(2):84-88.
[4]王秀丽,孙晓骥,赵玉慧.地震作用下弦支穹顶结构动力稳定性参数分析[J].空间结构,2008,14(3):22-27.WANG Xiu-li,SUN Xiao-ji,ZHAO Yu-hui.Parametricstudy of dynamic stability of suspen domes under earth-quake[J].Spatial Structures,2008,14(3):22-27.
[5]罗永峰,刘慧娟,韩庆华.弦支穹顶结构动力稳定性分析方法[J].西南交通大学学报,2008,43(6):729-735.LUO Yong-feng,LIU Hui-juan,HAN Qing-hua.Anal-ysis method of dynamic stability of suspended domestructures[J].Journal of Southwest Jiaotong Universi-ty,2008,43(6),729-735.
[6]VAMVATSIKOS D,CORNELL C A.Incremental dy-namic analysis[J].Earthquake Engineering and Struc-tural Dynamics,2002,31:491-514.
[7]CHEN W F,HAN D J.Plasticity for Structural Engi-neers[M].New York:Springer-Verlag,1988.
[8]BUDIANSKY B,HUTCHINSON J W.Dynamic buck-ling of imperfection sensitive structures[A].Proceed-ings of International Congress of Applied Mechanics[C],Munich,1964:120-128.
[9]李永梅.新型索承网壳结构体系理论和试验研究[D].北京:北京交通大学,2004.LI Yong-mei.Theoretical Analysis and ExperimentStudy of Cable-Supported Lattice Shell Structures[D].Beijing:Beijing Jiaotong University,2004.
[10]JGJ61-2003.网壳结构技术规程[S].北京:中国建筑工业出版社,2003.
[11]支旭东,聂桂波,范峰,等.大跨度单层球面网壳的损伤模型及强震失效[J].哈尔滨工业大学学报,2009,41(8):6-10.ZHI Xu-domg,NIE Gui-bo,FAN Feng,et al.Dam-age model and failure mechanism of long-span single-layer reticulated domes under earthquakes[J].Journalof Harbin Institute of Technology,2009,41(8):6-10.
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